Requirements

JRE -- Java Plug-in 1.2 defaults to JRE 1.2.1_03. Sun does not support the use of any JRE less than 1.2.1_03 with Java Plug-in 1.2.

Updated HTML -- You must modify your Web pages with the <EMBED> tag to invoke Java Plug-in 1.2, even if you modified these pages to work with a previous version of Java Plug-in. You must modify the original, unconverted HTML. Refer to the HTML Specification for more information on updating your Web pages with the <EMBED> tag. In addition, you can download the Java Plug-in 1.2 HTML Converter free of charge, which automatically makes the necessary changes.